Home / 9,345.72-12,897.19-5,154.12

Finding the Fourth Proportional to 9,345.72, 12,897.19 and 5,154.12

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Solution

The fourth proportional to 9,345.72, 12,897.19 and 5,154.12 is: 7,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,345.72 : 12,897.19 = 5,154.12 : x
  2. Step 2: Convert to fraction form
    9,345.72/12,897.19 = 5,154.12/x
  3. Step 3: Cross multiply
    9,345.72x = 12,897.19 × 5,154.12
  4. Step 4: Simplify right side
    9,345.72x = 66,473,664.92
  5. Step 5: Solve for x
    x = 66,473,664.92/9,345.72
  6. Step 6: Final answer
    x = 7,112.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.